input[type="file"] {
    display: none; /* 隐藏默认的文件上传按钮 */
}

.custom-file-upload {
    display: inline-block;
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007bff;
    border-radius: 5px;
    cursor: pointer;
}

.custom-file-upload:hover {
    background-color: #0069d9;
}